Improvement in sash-pulley



gisten @gstellt tite.

A. F. H1NEs, oEWAsHINGToN, DISTRICT 0F COLUMBIA. Leners Patent N.88,763, dan@ Apre 6, 1869.

IMPROVEMENT IN SASE-P'ULLEY.

' The Schedule referred to in these Letters Patent and making pari: ofthe lame.

ITo all whom fit ma/y concern.- Y

and operation.

My cord and pulley arrangement is made by placing a. pulley, a/in'therear end of a suitable box, with two iction-pulleys, blc, in front, thesaid friction-pulleys working between the sides of the box, the edges ofsaid friction-pulleys working in a slot in the front of said box7 asshown by FigureI, and a co'rd, d, passed about the pulleys. l A

This pulley-a1rangement is then fastened into the window-fiame B, at ornear the meeting-1ail of the sash, A, one end of the cord beingattaehedto the meeting-rail of the sash,- and the other end of the cord fastenedto the bottom or top rail of sash, as the oase may be, as shown byFigure I I.

When thus arranged, the friction will be suihcient to keep the sash atany desired height without the use of weights, catches, springs, or anyother device. 1

I do 'not claim the double-grooved pulleys combined with the singlepulley, and having the cord applied to them and to the window-frame, asthis has been done before; but

' What I do claim as my invention, and desire to secure by LettersPatent, is Y The combination of the single-grooved pulleys wb e,

applied to the window-frame, and having the cord ap-v plied upon them,and attached to the window-sash, sub stantially in the manner shown'anddescribed.

A. F. EINES. Witnesses:

THOMAS P. P .I. B. Hume.

